Long Formal Dresses
Long formal dresses are the ultimate choice for black-tie events, formal dances, and weddings. Choose from mermaid-style, A-line gowns, or modern sheath designs, made with luxurious fabrics like velvet, satin, and glitter mesh. Sequins and rhinestones add a touch of glam, while long sleeves, off-the-shoulder, strapless, and open-back details offer a range of stunning options for any occasion.
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MOST POPULAREmbrace the Season in Stunning Long Formal Dresses for Every Celebration
Embrace the season with Windsor’s captivating collection of long formal dresses, designed to make a statement in the season's most stunning colors. Whether you’re attending a holiday gala, a winter engagement party, or a formal family gathering, find styles that range from sleek mermaid gowns to timeless A-line silhouettes in colors perfect for every occasion.
Explore long formal dresses in vibrant seasonal shades, like deep reds that bring warmth to holiday gatherings, elegant greens that feel festive and classic, and sparkling silvers that add a touch of glamour. For those who love to stand out, rich purples offer a luxurious look, while crisp whites bring a fresh, timeless appeal. Each color adds its own flair to the season, allowing you to embrace the hues that feel most "you."
Our long formal dresses are not only beautiful—they’re designed with comfort and practicality in mind. Many styles feature functional details like side pockets, adjustable straps, and high-quality fabrics that will make these dresses a favorite for seasons to come. Choose from flowing maxis, chic midis, or structured trumpet gowns, all tailored to flatter any figure and suit your unique style.
For added elegance, discover semi-formal dresses featuring unique details like lace-up backs, thigh-high slits, or delicate embroidery in these festive colors—ideal for holiday parties, winter weddings, or upscale dinners.
Complete your look with on-trend necklines such as off-the-shoulder, square, or high necks, and add a touch of sparkle with rhinestone accessories to match any color you choose. Step confidently into every event, knowing you’re dressed to impress.
Browse Windsor’s collection of long formal dresses in all the season’s beautiful colors, available in-store or online, and find pieces that will elevate your wardrobe for every special occasion!
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Anne Formal Lattice Satin Dress
Special Occasion
Stun in satin as you create a one-of-a-kind entrance in our Anne dress! She features a sleeveless bodice, a square neckline, padded cups, and spaghetti straps that lead to a lattice back design. Her empire waist leads to a floor-length skirt that is accented with pockets and a stunning waist-high slit. The dress is composed of a satin fabric that offers a relaxed fit with minimal stretch. Includes a back zipper closure. Complete look with a satin clutch and heels.
Fit & Features
- Sleeveless square neckline, padded cups
- Spaghetti straps, lattice-back design
- Empire waist, lower back zipper and hook and eye closure
- A-line silhouette, high side slit
- Hidden side pockets
- Satin fabric, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-6373
Category Name: Long Formal Dresses
Price: $14.97 $109.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Annabelle Knit Satin Formal Dress
Special Occasion
Wrap yourself in the sleek and stunning Annabelle knit satin formal dress for effortless glamour! She features a sleeveless cowl neckline with a padded bust, adjustable spaghetti straps for a customized fit, front ruching at the waist, and a floor-length, wrap-front skirt with a fitted A-line silhouette. Style this long dress with sparkling rhinestone earrings.
Fit & Features
- Sleeveless cowl neckline, adjustable spaghetti straps
- Padded cups, no bra required
- Empire waist seam, front ruching
- Floor-length, wrap-front skirt, A-line silhouette
- Satin knit fabric
- Form-hugging fit, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1876
Category Name: Long Formal Dresses
Price: $59.90
Availability: In Stock
Available Color: DENIM, GOLD
Available Size: S, M, L, XL, XS
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Plus Kaleigh Off Shoulder Dress
Special Occasion
Keep a classy profile in our floor length Kaleigh dress! She features an off the shoulder neckline with ruched detailing on one shoulder and ruched detailing along the sides to create a gracefully cascading effecting leading to a sexy high slit. She is double lined with a soft to the touch knit fabric that offers a curve hugging fit that provides plenty of stretch.
Special Occasion products cannot be returned to any retail locations.
Style Number/Barcode: 15002-0100
Category Name: Long Formal Dresses
Price: $29.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Online Only
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Delana Formal One-Shoulder Satin Dress
Special Occasion
Keep it luxe in the stunning Delana dress that brings the sophistication to your special evening. She features a unique one-shoulder neckline with a charming bow accent on the left shoulder, a floor-length mermaid silhouette, and is composed of a captivating satin-like fabric. Complete your special occasion outfit with rhinestone earrings.
Fit & Features
- One-shoulder neckline
- Bow accent on the left shoulder
- Floor-length mermaid silhouette
- Satin-like fabric, moderate stretch
- Form-hugging fit
- Runs true to size
Style Number/Barcode: 05002-0974
Category Name: Long Formal Dresses
Price: $14.97 $64.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Rose Formal Mesh Corset Long Dress
Special Occasion
Exquisite for fancy celebrations or parties, the Rose formal long dress is the perfect combination of elegance and glamour. Boasting a sleeveless sweetheart neckline with cowl pleating, the maxi dress features a padded bust, adjustable spaghetti straps, a crisscross open back, sheer corset-style bodice, flexible boning, and side ruched seams give it a subtle, curve-hugging slim silhouette. With a high side slit and a floor-length hem, made of a luxurious mesh fabric, this long dress is sure to stun at any formal event. Style the formal dress with earrings and a clutch to complete the look.
Fit & Features
- Sleeveless sweetheart neckline, cowl pleating
- Adjustable spaghetti straps, crisscross open back
- Padded bust, sheer corset bodice, flexible boning
- Side ruched seams, slim silhouette
- High-side slit, floor-length hem
- Mesh fabric, partial stretchy knit lining
- Runs true to size
Style Number/Barcode: 05002-7770
Category Name: Long Formal Dresses
Price: $54.90
Availability: In Stock
Available Color: HUNTER, BROWN, ROYAL
Available Size: XS, M, L, S, XL
Product Badge:- Best Seller
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Melinda Formal Satin Lace-Up Mermaid Dress
Special Occasion
You'll be a breath-taking view in the Melinda formal satin dress at galas and black tie soirees! She stuns in a sleeveless cowl neck, a padded bust, spaghetti straps that lace up along the open back, and a side pleated seam that shapes the mermaid silhouette with a high-cut front slit and long hem. The formal dress is composed of a silky satin-lined fabric with a sheen effect and minimal stretch. Complete the look in platform heels.
Fit & Features
- Sleeveless cowl neck, spaghetti straps, padded bust
- Lace-up open back, zipper closure
- Mermaid silhouette, high-cut front slit
- Floor-length hem
- Lined silky satin, minimal stretch
- Sticky bra or pasties optional
- Runs true to size
Style Number/Barcode: 05002-7602
Category Name: Long Formal Dresses
Price: $84.90
Availability: In Stock
Available Color: RED, BLACK
Available Size: S, M, L, XS, XL
Product Badge:- Best Seller
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Marylou Lace Mesh Plunge Neck Formal Dress
Special Occasion
Bring the romantic allure to the evening affair in the Marylou lace mesh plunge formal dress! She embodies flirtatious style in a sleeveless plunge V-neckline with a built-in padded bust and adjustable spaghetti straps on her empire waist bodice. The sparkly embroidered lace mesh fabric effortlessly flows into a floor-length silhouette with a high-side slit to showcase some legs. She also features a curve-conscious silhouette to flaunt your stunning figure! Complete the look in an elegant hair clip.
Fit & Features
- Plunge V-neckline, adjustable spaghetti straps
- Adhesive bra recommended, built-in padded bust
- High side slit, back zipper, hook and eye closure
- Empire waist, form-fitting silhouette
- Floor-length hem
- Sparkly embroidered lace mesh fabric, full knit lining, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1852
Category Name: Long Formal Dresses
Price: $24.97 $69.90
On Sale: Yes
Availability: In Stock
Available Color: DENIM, HUNTER, BLACK
Available Size: XS, S, M, L, XL
Product Badge:- Sale
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Lala High Slit Satin Formal Dress
Special Occasion
Flaunt your natural beauty in our fabulous Lala dress! She features a trendy pleated cowl neckline with a slim-fit bodice, a floor-sweeping silhouette with a semi-high slit that shows just a hint of skin, and a form-hugging fit. The smooth satin fabric offers a moderate stretch. Pair this gorgeous dress with a sleek ring set to add some glamour to your look for your special occasion.
Fit & Features
- Pleated cowl neckline and square back, spaghetti straps
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Slim-fit bodice, form-hugging fit
- Floor-length silhouette with a subtle side slit
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Stretch satin fabric, non-see-through
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-1866
Category Name: Long Formal Dresses
Price: $9.97 $59.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Maisy Cutout High Slit Satin Formal Dress
Special Occasion
Make a showstopping entrance in the always stunning Maisy satin formal dress! She features a sleeveless V-neckline with a twist-front design, spaghetti straps, an alluring front cutout at the waist, and a floor-sweeping A-line silhouette with a chic high side slit to show off some leg. The satin-knit fabric showcases a luxe sheen for a glamorous vibe. Style with rhinestone heels for your next gala!
Fit & Features
- Sleeveless V-neckline, twist-front design
- Spaghetti straps
- Front waist cutout, high waist seam
- Floor-length hem, flowy A-line silhouette, side slit
- Satin-knit fabric, lining at the bust, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-6848
Category Name: Long Formal Dresses
Price: $74.90
Availability: In Stock
Available Color: GOLD
Available Size: XS, S, M, L
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Coralie Off Shoulder Front Slit Dress
Special Occasion
Look and feel elegant for your next fancy night out in our gorgeous Coralie formal dress. Her classy fold-over, off-the-shoulder neckline will pair beautifully with a sparkling necklace. Her front slit lets you show off those glittering heels you've been wanting to wear! The formal long dress is composed of a crepe fabric that offers a moderate stretch and includes a knit mini-length lining. Complete your look with classic block heels.
Fit & Features
- Off-the-shoulder neckline with a fold-over design
- Back zipper and hook and eye closure
- Ruching at center back
- Floor-length hem with a front slit, form-hugging fit
- Crepe fabric, knit mini-length lining, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-7131
Category Name: Long Formal Dresses
Price: $29.97 $59.90
On Sale: Yes
Availability: Out of Stock
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Mona Formal Plunging Glitter Dress
Special Occasion
Take the plunge into glamour as you stun in our breathtaking Mona dress! She features a sleeveless bodice, a plunging V neckline with pleated dealing, and sheer adjustable spaghetti straps that cross at the back. Her slim fit waist leads to a sweeping A-line silhouette. She stands out with her glitter accents and caviar beaded detailing set in a romantic pattern. The dress is composed of a lined tulle fabric that offers a relaxed fit with minimal stretch. The knit lining includes two high slits to reveal a hint of skin under the semi-sheer tulle fabric. Complete your gorgeous look with rhinestone duster earrings and a new pair of heels.
Fit & Features
- Plunging V neckline with pleated detailing
- Sheer adjustable spaghetti straps
- Cross back design
- Back zipper and hook and eye closure
- High waist leading to a floor-length skirt
- A-line silhouette
- Semi-sheer tulle fabric with glitter and beaded details
- Knit lining with dual front slits
- Runs true to size
Style Number/Barcode: 05002-0326
Category Name: Long Formal Dresses
Price: $19.97 $69.90
On Sale: Yes
Availability: Out of Stock
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Raelynn Satin Cross Strap Dress
Special Occasion
Set off sparks in the Raelynn dress that brings the sultriness for your next evening out. The Raelynn formal satin dress features a plunging V-neckline that styles well with your favorite statement necklaces and a bold open back with adjustable cross straps. The fitted bodice leads to a curve-hugging mermaid silhouette that is accented with a sexy front, thigh-high slit. Complete your look with sparkling rhinestone earrings and a matching clutch to bring glamour to your formal evening outfit.
Fits & Features
- Plunging v-neckline, adhesive bra recommended
- Flattering princess seams at the bust
- Adjustable spaghetti straps, cross back
- Floor-length Mermaid silhouette, front thigh-high slit
- Smooth satin fabric, minimal stretch
- Back zipper closure
- Fits true to size
Style Number/Barcode: 05002-0116
Category Name: Long Formal Dresses
Price: $29.97 $54.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Clearance
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Sophie Glitter Knit Mermaid Dress
Special Occasion
Effortlessly elegant, the Sophie glitter knit mermaid dress would be a stunning choice for a formal gala. She features a square neckline, short puff sleeves, a partially open back with a lace-up strappy design for a customized fit, a high waist seam, a floor-length hem, and a mermaid silhouette with a high front slit to showcase your heels. The glitter knit fabric offers a moderate stretch. Complete the look in this long dress with rhinestone statement earrings.
This dress is the perfect pick for Prom 2023! Not exactly your style? You’ll love other prom dresses.
Fit & Features
- Square neckline
- Short puff sleeves
- Open back, lace-up strappy design, tie closure
- High waist seam
- Floor-length hem, mermaid silhouette, front slit
- Glitter knit fabric, moderate stretch
- Sticky bra or pasties recommended
- Runs true to size
Style Number/Barcode: 05002-2515
Category Name: Long Formal Dresses
Price: $74.90
Availability: In Stock
Available Color: NAVY
Available Size: S
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Roseanne One-Shoulder Satin Dress
Special Occasion
Captivate with elegance in this one-shoulder long satin dress, ideal for your next formal soiree, prom, or black-tie wedding. The luxurious stretch satin contours around the waist, revealing an alluring front-wrap design that showcases the legs, allowing you to walk and move with ease. The asymmetrical neckline serves as a sleek backdrop, perfect for highlighting a trendy choker necklace or bold chandelier earrings.
Fit & Features
- One-shoulder neckline, spaghetti strap
- Ruched side seam
- Wrap-front design, asymmetrical side slit
- Floor-length, form-fitting silhouette
- Satin fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-0813
Category Name: Long Formal Dresses
Price: $24.97 $59.90
On Sale: Yes
Availability: In Stock
Available Color: BROWN
Available Size: XS, S
Product Badge:- Sale
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Londyn Formal High Slit Convertible Dress
Special Occasion
Showcase your unique style with a convertible formal dress that allows you to show off multiple styles! Londyn features a large slit at the bodice that allows you to create a one-shoulder neckline, boat neckline, halter neck, or an off-the-shoulder neckline. The slim-fit bodice leads to a curve-hugging A-line silhouette with a high side slit. The dress is composed of a smooth knit fabric that offers a form-hugging fit with a moderate stretch. Complete the look with heels and a clutch.
Fit & Features
- Large slit at the bodice
- Multiple ways to wear neckline
- A-line silhouette
- High side slit
- Smooth knit fabric
- Form-hugging fit, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1301
Category Name: Long Formal Dresses
Price: $9.97 $49.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Lucille Formal Satin Mermaid Dress
Special Occasion
Have a wedding to attend or a dressy dinner ceremony? The Lucille formal dress is here to make your dreams of looking radiant come true! She features a classic and sultry sleeveless square neckline, padded bust, adjustable spaghetti straps for a customizable fit, an open lace-up back design, and a fitted bodice with a ruched seam to accentuate your curves along her mermaid silhouette showcasing a high-cut front slit along the floor-length hem. The formal dress is composed of a smooth satin-lined knit fabric with a subtle sheen and minimal stretch. Complete the look with an elegant hair accessory for a glamorous style!
Fit & Features
- Sleeveless square neckline, padded bust, adjustable spaghetti straps
- Open lace-up back design, zipper and hook-eye closure
- Fitted bodice, front ruched seam, high-cut slit
- Mermaid silhouette, floor-length hem
- Lined satin knit fabric, minimal stretch
- Sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-6872
Category Name: Long Formal Dresses
Price: $49.90
Availability: In Stock
Available Color: ROYAL
Available Size: XS, S, M, L, XL
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Jaime Feather Trim Velvet Mermaid Dress
Special Occasion
Bring the dramatic flair to your next formal soiree in the stunning Jaime feather trim velvet mermaid dress. She features a sleeveless square neckline with a chic marabou feather trim, spaghetti straps, a high waist seam, ruching down the side leading to a thigh-high slit, and a fitted, floor-length, mermaid silhouette. The luxe velvet fabric offers a moderate stretch. Style this dress with a glitzy evening bag.
Fit & Features
- Sleeveless square neckline, marabou feather trim
- Spaghetti straps
- High waist seam, ruching down the front, high slit
- Floor-length hem, form-hugging fit, mermaid silhouette
- Smooth velvet fabric, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2608
Category Name: Long Formal Dresses
Price: $19.97 $79.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Tabitha Formal High Slit Crepe Dress
Special Occasion
Make your night one to remember in a formal long dress that stands out at your special event. Tabitha features a sleeveless square neckline, supportive padded cups, and spaghetti straps that lead to a lace-up back. Her slim-fit waist leads to a flattering A-line silhouette that is accented with a high side slit. She is composed of a crepe fabric that offers a form-hugging fit with a moderate stretch. Complete the look in this long dress with rhinestone heels and a sphere clutch.
Fit & Features
- Sleeveless square neckline, spaghetti straps
- Built-in padded bust, no bra required
- Lace-up back, tie closure
- Back zipper closure
- High waist seam, A-line silhouette, high side slit
- Crepe-lined fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-2036
Category Name: Long Formal Dresses
Price: $9.97 $69.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Juliet Formal High Slit Dress 2
Special Occasion
Radiate effortless elegance in our sophisticated satin Juliet gown! She features adjustable spaghetti straps, a V-neck seamed bodice with light padding at bust, a high-seam waist, and a long, gently pleated A-line skirt with pockets at either hip and a dramatic center front slit. Juliet is fully lined and made from a smooth, shiny satin-like woven fabric with a touch of stretch. Pair this beautiful dress with a shimmering rhinestone necklace for a glamorous look.
Shop Juliet In More Colors: Juliet Formal High Slit Dress
Fit & Features
- Lined satin-like woven fabric, slight stretch
- V-neckline with padded cups
- Adjustable spaghetti straps
- Fitted high waist, hidden side pockets
- Elongated floor-length silhouette with high side slit
- A-line fit
- Runs true to size
Style Number/Barcode: 05002-0896
Category Name: Long Formal Dresses
Price: $19.97 $99.90
On Sale: Yes
Availability: Out of Stock
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Marleigh Formal Sequin Scroll Dress
Special Occasion
Light up the night with a formal sequin dress that elevates your special evening look. Marleigh features a dazzling damask sequin pattern, a sleeveless V-neckline, supportive padded cups, and spaghetti straps that lead to a cross-back strap design. Her back features a partially open design with tie-back straps. Her slim-fit bodice leads to a flared trumpet hem that brings the drama. Complete the look in this formal long dress with a sphere clutch and rhinestone heels.
Fit & Features
- Sleeveless V-neckline
- Padded cups
- Spaghetti straps, cross-back design, tie closure
- Lower back zipper, hook and eye closure
- High waist, trumpet silhouette
- Lined mesh fabric, damask sequin pattern
- Form-hugging fit, minimal stretch
- Runs true to size
Style Number/Barcode: 05002-2085
Category Name: Long Formal Dresses
Price: $19.97 $99.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Gianna Strapless High-Slit Satin Dress
Special Occasion
Create an effortlessly captivating look in the Gianna sleek satin formal dress. She features a strapless subtle sweetheart neckline, a wrap-front design at the bodice, a flattering high waist, and a floor-length fitted silhouette with a sultry thigh-high front slit. Complete your outfit with a radiant rhinestone necklace and strappy heels for an unforgettable look.
Fit & Features
- Strapless sweetheart neckline
- Strapless or adhesive bra recommended
- Wrap-front design at the bodice, pleated detailing
- Boning detailing to provide structure
- Back zipper, hook and eye closure
- High waist seam, floor-length fitted silhouette, high front slit
- Satin fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1638
Category Name: Long Formal Dresses
Price: $29.97 $64.90
On Sale: Yes
Availability: Out of Stock
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Evie Formal Ruched Satin Sleeveless Dress
Special Occasion
Make an elegant impression with a formal long dress that captivates from the moment you enter the room! Evie features a sleeveless square neckline, adjustable spaghetti straps, ruching at the waist, and an A-line silhouette accented with a high-side slit. The dress is composed of a satin-like fabric that offers a form-hugging fit with a moderate stretch. Complete the look with rhinestone heels and a matching clutch.
Fit & Features
- Sleeveless square neckline, adjustable spaghetti straps
- Ruching at the waist, back zipper closure
- A-line silhouette, high side slit
- Form-hugging fit
- Satin-knit fabric, knit lining at the bust, moderate stretch
- Strapless or sticky bra recommended
- Runs true to size
Style Number/Barcode: 05002-2026
Category Name: Long Formal Dresses
Price: $14.97 $54.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale
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Lori Formal Sequin Lace-Up Long Dress
Special Occasion
Gorgeous sequins make the Lori formal dress a sexy standout! Shimmer your way into school dances, banquets, and dressy celebrations. She features a sleeveless sweetheart neck, lightly padded bust, spaghetti straps that lace up along the open back, a form-hugging mermaid silhouette, and a high-cut front slit on the floor-length hem. The formal long dress is composed of sequin scroll embroidery on mesh fabric with a stretchy knit lining. Style with a glam jewelry set and heels to complete the look!
Fit & Features
- Sleeveless sweetheart neck, spaghetti straps
- Lace-up open-back design, lightly padded bust
- Back zipper and hook-eye closure
- Form-hugging, mermaid silhouette
- High-cut front slit, floor-length hem
- Sequin scroll mesh fabric, stretchy knit lining
- Runs true to size
Style Number/Barcode: 05002-2898
Category Name: Long Formal Dresses
Price: $19.97 $109.90
On Sale: Yes
Availability: Out of Stock
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Sienna High-Slit Ruched Formal Dress
Special Occasion
Keep your look chic and stunning in the curve-hugging Sienna formal dress. She features a sleeveless cowl neckline, spaghetti straps, a high waist with ruched detailing, and a floor-length mermaid silhouette with a sultry thigh-high front slit. Complete the outfit with rhinestone earrings and strappy heels.
Fit & Features
- Sleeveless cowl neckline
- Spaghetti straps
- High waist, ruching
- Fitted floor-length mermaid silhouette
- Front cinched tie detail, high slit
- Smooth satin fabric, moderate stretch
- Runs true to size
Style Number/Barcode: 05002-1525
Category Name: Long Formal Dresses
Price: $14.97 $64.90
On Sale: Yes
Availability: Out of Stock
Product Badge:- Sale